1217066476560 has 640 divisors, whose sum is σ = 4444532674560. Its totient is φ = 272223436800.

The previous prime is 1217066476531. The next prime is 1217066476579. The reversal of 1217066476560 is 656746607121.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 614989651 + ... + 614991629.

It is an arithmetic number, because the mean of its divisors is an integer number (6944582304).

Almost surely, 2^{1217066476560} is an apocalyptic number.

1217066476560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217066476560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222266337280).

1217066476560 is an abundant number, since it is smaller than the sum of its proper divisors (3227466198000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217066476560 is a wasteful number, since it uses less digits than its factorization.

1217066476560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 1217066476560 in words is "one trillion, two hundred seventeen billion, sixty-six million, four hundred seventy-six thousand, five hundred sixty".